The first six months of 2015 comprised the warmest first half of any year on record, surpassing the previous global record for January through June set in 2010. This past June also was the warmest in the 136-year record, according to the latest monthly update from the National Centers for Environmental Information. (Both NASA and the Japan Meteorological Agency have also ranked June as warmest on record.) SEE ALSO: Japan Meteorological Agency: For the Globe as a Whole, June 2015...